#311F3F
Closest named color: Space Cadet (#2B2D42). oklch(27.8% 0.061 308.8), rgb(49, 31, 63).
Aa
White text reads best on this color (15.01:1).
About this color
#311F3F is a dark, muted purple. In OKLCH its lightness is 28%, its chroma 0.061 and its hue 309°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Space Cadet (#2B2D42), ΔE 0.043 away. White text reads best on it, at 15.01:1.
| Hue family | Purples |
| Lightness | dark (28%) |
| Chroma | muted (0.061) |
| Temperature | in between |
| Nearest name | Space Cadet (#2B2D42) |
| Black text | 1.39:1 |
| White text | 15.01:1 |
Values
| HEX | #311F3F |
| RGB | rgb(49, 31, 63) |
| HSL | hsl(274, 34%, 18%) |
| OKLCH | oklch(27.8% 0.061 308.8) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #311F3F | 15.01:1 | AAA | Lc -104.6 | Preferred for body text |
| Black text on #311F3F | 1.39:1 | Fails | Lc 0.0 | Not readable |
| #311F3F text on white | 15.01:1 | AAA | Lc 101.8 | Preferred for body text |
| #311F3F text on black | 1.39:1 | Fails | Lc 0.0 | Not readable |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 950.
-
Step 50
50
#F7F4FB
oklch(97.1% 0.01 305.4)
-
Step 100
100
#EEE6F5
oklch(93.6% 0.022 309.6)
-
Step 200
200
#E1D2EE
oklch(88.4% 0.041 309.4)
-
Step 300
300
#CEB4E5
oklch(80.8% 0.073 308.8)
-
Step 400
400
#B68CD8
oklch(70.8% 0.117 309)
-
Step 500
500
#A36DCD
oklch(63% 0.149 308.7)
-
Step 600
600
#8F53BA
oklch(55.6% 0.162 309)
-
Step 700
700
#7943A0
oklch(49.1% 0.15 308.7)
-
Step 800
800
#633882
oklch(42.8% 0.124 308.9)
-
Step 900
900
#503168
oklch(37.7% 0.096 308.5)
-
Step 950
950 (this color)
#311F3F
oklch(27.8% 0.061 308.8)
#311F3F with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #182640 | 0.047 |
| Deuteranopia (no green cones) | #1C273E | 0.043 |
| Tritanopia (no blue cones) | #2F242C | 0.043 |
| Achromatopsia (no color) | #272727 | 0.061 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #311F3F
#311F3F
oklch(27.8% 0.061 308.8)
- #1F2E09
#1F2E09
oklch(27.8% 0.061 128.7)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #311F3F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Space Cadet #2B2D42 ΔE 0.043
- Oxford Blue #1B263B ΔE 0.045
- Dark #1B2431 ΔE 0.053
- Eggplant #380835 ΔE 0.055
- Dark Purple #35063E ΔE 0.057
- Aubergine #3D0734 ΔE 0.058
- Jet #212529 ΔE 0.059
- Gunmetal #293241 ΔE 0.060
Use #311F3F in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.